SDR UIEA2021020900261

Service difficulty report · Skin · Boeing 747481F

Difficulty date: February 6, 2021
Submitted: February 10, 2021
Operation: Air carrier
Aircraft: N404KZ
Make and model: Boeing 747481F
Aircraft serial: 34283
Aircraft time: 50,090 hours, 10,098 cycles
System (JASC): 5753 · Trailing Edge Flaps
Part: Skin
Condition: Dented
Location: Rt Wing Te Flap
Stage of operation: IN
How discovered: V
Nature of condition: O
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DENT - SKIN, FOUND R/H WING OUTBD MID FLAP TOP PANEL UPPER SURFACE DENT AT WBL 536(<P>REMOVED THE DAMAGED MATERIAL AND CLEANED, MEASURED THE DAMAGE AREA (DIA: 1", 5" FROM L/E, 22" FROM INBD EDGE). BOND REPAIR DOUBLER (DIA: 4") WITH FILM ADHESIVE, CURED AT 250 DEGREES F FOR 100 MINUTES, MAINTAINED A MINIMUM VACUUM PRESSURE 20 IN/HG IAW B747-400F SRM 57-53-01-2R-1. REFER TO SRM 51-70-10-2R-2 AND SRM 51-70-10-2R-0 REV 90. CONDITION CHECK IS SATISFACTORY.</P>)